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209 results for “humanity many new years”
- The Perpetually Curious! › Canonical › Environment & SustainabilityArticle
🕸️ Ghost Nets, Silent Drifters: How Lost Fishing Gear Haunts the Ocean
From section: 🎣 When fishing nets linger beyond their purposeA typical net may remain structurally intact for many years, which is useful during fishing but consequential once the net is lost.
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌫️ Mist Over Ancient Ridges: The Great Smoky Mountains as a Living, Breathing World
From section: 🌄 Roots in deep time: how the Smokies became mountainsSome of the oldest rocks associated with the park are metamorphic and igneous rocks more than 1 billion years old, while many of the rocks that help form the Smokies began as sand, silt, mud, and gravel deposited along ancient marine margins.
- The Perpetually Curious! › Canonical › Wilderness & Homestead CreaturesArticle
🌺 Whispers of Tiny Wings: Hummingbirds, Their Lives, and the Science of Small Flight
From section: Frequently Asked Questions+How long do hummingbirds live? Many individuals that survive their first year may live for three to five years, and some live longer.
- The Perpetually Curious! › Canonical › Cosmic ExplorationArticle
🌑 Shadows Across the Solar System: How Eclipses Unfold Beyond Earth
From section: 🔭 The geometry that shapes every eclipseThe appearance of an eclipse depends on apparent size, which is determined by an object’s actual diameter and its distance from the observer. Because distances and moon sizes vary widely across the Solar System, eclipses take on many forms. Some worlds experience total eclipses. …
- The Perpetually Curious! › Canonical › Wilderness & Homestead CreaturesArticle
🐘 Minds Like Quiet Rivers: The Intelligence of Elephants
From section: Frequently Asked Questions+Is the mother and calf bond unique among mammals? Many mammals show strong maternal bonds, but elephants extend caregiving across multiple years and involve allomothers. This multi layered system is closely tied to their intelligence and long childhood.
- The Perpetually Curious! › Canonical › Cosmic ExplorationArticle
🌌 Borrowing the Orbits of Giants: How Gravity Assists Carry Spacecraft into the Deep
From section: 🚀 Why Space Is Too Vast for Rockets AloneReaching distant planets usually requires high heliocentric energy, especially when mission designers want travel times measured in years rather than many decades.
- The Perpetually Curious! › Canonical › Biology & HealthArticle
🌡️ When the Skin Remembers the Cold: Why We Get Goosebumps
From section: 🌱 Beneath the Surface: Hair Growth, Stem Cells, and Tissue MaintenanceFor many years, piloerection was viewed primarily as a mechanical reflex that raised hairs and altered the skin surface.
- The Perpetually Curious! › Canonical › Botanical WondersArticle
🌱 Why Leaves Have Different Shapes: The Science Behind Nature’s Geometry
They are solutions, refined over millions of years, to the problem of how to live in a particular place on Earth, and they invite a closer look at how form arises from the interplay of ancestry, environment, and growth.
- The Perpetually Curious! › Canonical › Botanical WondersArticle
🌿 Trees That Drink the Sky: How Certain Species Shape Water and Land in South India
From section: 🌏 A landscape written in waterSome plants have shallow roots that rely on the upper layers of soil. Others develop deeper taproots that can extend to around 30 feet or more (about 9 meters) in many field settings, with exceptional depths reported under favorable geological conditions. …
- The Perpetually Curious! › Canonical › Engineering & TechnologyArticle
🏭 Petroleum Refining: The Process Behind Heat, Pressure, and Design
From section: Frequently Asked Questions+How long can a refinery run before it needs major maintenance? Many refineries operate continuously for several years between major maintenance periods known as turnarounds, which allow engineers to inspect, clean, and repair equipment that cannot be serviced during normal operation.